import { NextRequest, NextResponse } from 'next/server';
import { getAuth, signInWithEmailAndPassword } from 'firebase/auth';
import { app } from '@/lib/firebase';

export async function POST(request: NextRequest) {
  try {
    const { email, password } = await request.json();

    if (!email || !password) {
      return NextResponse.json(
        { error: 'Missing email or password' },
        { status: 400 }
      );
    }

    const auth = getAuth(app);

    const userCredential = await signInWithEmailAndPassword(auth, email, password);
    const user = userCredential.user;

    return NextResponse.json(
      {
        user: {
          uid: user.uid,
          email: user.email,
          name: user.displayName,
        },
      },
      { status: 200 }
    );
  } catch (error: any) {
    console.error('Login error:', error);

    let message = 'Login failed';

    if (error?.code === 'auth/user-not-found') {
      message = 'No user found with that email';
    } else if (error?.code === 'auth/wrong-password') {
      message = 'Incorrect password';
    } else if (error?.code === 'auth/invalid-credential') {
      message = 'Invalid credentials';
    }

    return NextResponse.json({ error: message }, { status: 400 });
  }
}